| Subject matter: | EPRI ESCP Dose Modeling Task Group » Blind benchmark for dose calculation of a loaded cask » Modelling, comparison of calculation results with each other and with measured data |
| Organisation: | » Subcommittee of the EPRI ESCP Modeling & Benchmark Group » International Blind Benchmark with participants from Europe, USA and Asia » BGZ participates together with WTI |
| Project period: | 2022 to 2023 |
The dose measurement on the cask was carried out on 22 September 2018, but the results are not known to the participants. This is to prevent the modelling from being influenced by the measured results. A US cask (Holtec International MPC-68 with Holtec International HI-STORM 100 overpack) loaded with 68 BWR fuel assemblies with burn-ups of around 20 to 40 GWd/tHM will be modelled. The dose rate is calculated based on the irradiation history and the cask loading plan.
Participants’ results will be compared in terms of deviations in results, modelling and implementation of the benchmark specifications. The calculation results will also be compared with the measured values to allow conclusions to be drawn about the accuracy of generalised prediction models. The results will be published in an EPRI report.
The model of the cask was created in the first phase and the calculations carried out according to the benchmark description (see Figure 11). The results were sent to the organisers for evaluation. Evaluations are currently being undertaken and the specifications for the second phase are being defined in parallel. The second phase will involve more detailed study and quantification of the uncertainties in the modelling and their effects on the calculated cladding tube temperatures. BGZ will contribute results to the benchmark in addition to the results arrived at in association with GNS and WTI.
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